Saw-filing implement.



J. FRITZ. SAW FILING IMPLEMENT. APPLIUATION FILED JUNE 27, 1908.

913,818. Patented Mar. 2, 1909.

Elvmmntoi JOHN H. FRITZ, OF CALDWELL, PENNSYLVANIA.

SAW-FILING IMPLEMENT.

Specification of Letters Patent.

Patented March 2, 1909.

Application filed June 27, 1908. Serial No. 440,722.

To all whom it may concern:

Be it known that I, JOHN H. FRITZ, citizen of the United States,residing at Caldwell, in the county of Clinton and State ofPennsylvania, have invented certain new and useful Improvements inSaw-Filing Implements, of which the following is a specification.

This invention relates to devices for filing saws, particularly circularsaws, and has for its particular object to provide a support for thefile adjustable in such manner that all parts of the saw tooth, andparticularly the --under part or throat, may be readily got at andoperated on with the file.

The invention is illustrated in the accompanying drawings, in whichFigures 1, 2 and 3 are elevations of three sides of the device. Fig. iis a top plan view.

Referring specifically to the drawings, 6 indicates a standard at thefoot of which is a fork 7 to fit over the saw arbor or collar on whichthe standard is supported, the flat side of the standard resting againstthe side of the saw. At its upper end the standard has thereon a slidinghead 8 which may be adjusted up and down on the standard to fit saws ofdifferent diameters and which is fixed at adjustment by a wedgekey 9, asshown.

At one edge the head has a cheek 10, to which is pivoted, by bolt 11, adisk 12 which may be turned on the pivot bolt, or fastened at' anydesired position by tightening the thumb nut on the bolt. A bracket arm13 is pivotally attached to the disk 12, by a screw 14, near the outeredge of the disk, and said bracket may be swung up or down to allow thefile to follow the curvature of the saw tooth. At its outer or free endthe bracket arm carries a transverse guide bar 15 upon which is mounteda slide 16 provided at its front or far end with a knob handle 17. Thefile, indicated at 18, is mounted upon or against the outer side of theslide, at the lower edge thereof, and is held inposition by two clipsmarked 19 and 20, which may be tightened on the file by screws 21,taking into the slide. The handle 212(pf the file projects rearwardlybeyond the s 1 e.

The device is held in place on the saw by means of a dependingprojection 23 which engages over the edge of the saw at thecircumference thereof, on the side opposite the standard.

In use, the knob 17 is held in the left hand and the handle 22 in theother, and the file and slide are worked back and forth along the guidebar. The double pivot joint or connection afforded by the pivots 11 and1 1 and the turning disk 12, allows all variation of the angle of thefile and its holder necessary to reach all parts of the saw tooth. Thepivot 14 is eccentric to the pivot 11 and accordingly when the disk isturned around the file holder is advanced or retracted with respect tothe support, and also raised or lowered, and at the same time the arm 13may be turned up or down on its pivot 14, allowing the exposed edge orface of the file to reach all parts of undercut or gullet teeth andparticularly the under side of the point of the tooth; and thereciprocation of the slide and file will necessarily be at the sameangle, transversely, in all positions, since the gulde on which theslide travels is rigid with the arm.

Various modifications may be made within the scope of the invention andno limitation is implied by reason of the particular construction shownand described.

I claim:

1. A saw filing implement comprising a standard, a reciprocating fileholder, and a support having a double pivotal connection to thestandard, the pivots being eccentric with respect to each other, and thesupport having a guide on which the holder slides.

2. A saw filing implement comprising a support, an adjustable headthereon, a disk pivoted to the head, the pivot having means to clamp thedisk to the head at any angle desired, an arm pivoted at one end to thedisk, the said pivots being eccentric and the arm having a transverseguide bar at its outer end, and a file holder slidable on the guide bar.

In testimony whereof I afliX my signature in presence of two witnesses.

JOHN H. FRITZ.

Witnesses:

H. T. HALL, MAUDE CAMPBELL.

